entrust

# AのB%＝BのA%

ちょっと計算すればわかります。「25の16%は16の25%だから4」とか。どちらかの数字がきりがよければ使えますね。

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— 暗記しておくとなにかと便利なプチ公式まとめ - IDEA*IDEA ～ 百式管理人のライフハックブログ (via termin) (via takaakik) (via fyfyfy) (via saitamanodoruji) (via gkojax)
2009-11-12 (via gkojay) (via jinon) (via hsmt)
Reblogged 1 year ago from ssbt (Originally from termin)
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Source: termin
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